From: Russell King Subject: [PATCH RFC 03/11] crypto: caam: incorporate job descriptor into struct ahash_edesc Date: Mon, 07 Dec 2015 19:12:10 +0000 Message-ID: References: <20151207191134.GV8644@n2100.arm.linux.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Cc: "David S. Miller" , linux-crypto@vger.kernel.org To: Fabio Estevam , Herbert Xu Return-path: Received: from pandora.arm.linux.org.uk ([78.32.30.218]:60512 "EHLO pandora.arm.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932328AbbLGTMR (ORCPT ); Mon, 7 Dec 2015 14:12:17 -0500 In-Reply-To: <20151207191134.GV8644@n2100.arm.linux.org.uk> Content-Disposition: inline Sender: linux-crypto-owner@vger.kernel.org List-ID: Rather than giving the descriptor as hw_desc[0], give it's real size. All places where we allocate an ahash_edesc incorporate DESC_JOB_IO_LEN bytes of job descriptor. Signed-off-by: Russell King --- drivers/crypto/caam/caamhash.c | 49 ++++++++++++++++-------------------------- 1 file changed, 19 insertions(+), 30 deletions(-) diff --git a/drivers/crypto/caam/caamhash.c b/drivers/crypto/caam/caamhash.c index 6a6d74f38300..cf557e1291b3 100644 --- a/drivers/crypto/caam/caamhash.c +++ b/drivers/crypto/caam/caamhash.c @@ -604,7 +604,7 @@ struct ahash_edesc { int src_nents; int sec4_sg_bytes; struct sec4_sg_entry *sec4_sg; - u32 hw_desc[0]; + u32 hw_desc[DESC_JOB_IO_LEN / sizeof(u32)]; }; static inline void ahash_unmap(struct device *dev, @@ -811,8 +811,8 @@ static int ahash_update_ctx(struct ahash_request *req) * allocate space for base edesc and hw desc commands, * link tables */ - edesc = kzalloc(sizeof(*edesc) + DESC_JOB_IO_LEN + - sec4_sg_bytes, GFP_DMA | flags); + edesc = kzalloc(sizeof(*edesc) + sec4_sg_bytes, + GFP_DMA | flags); if (!edesc) { dev_err(jrdev, "could not allocate extended descriptor\n"); @@ -821,8 +821,7 @@ static int ahash_update_ctx(struct ahash_request *req) edesc->src_nents = src_nents; edesc->sec4_sg_bytes = sec4_sg_bytes; - edesc->sec4_sg = (void *)edesc + sizeof(struct ahash_edesc) + - DESC_JOB_IO_LEN; + edesc->sec4_sg = (void *)(edesc + 1); ret = ctx_map_to_sec4_sg(desc, jrdev, state, ctx->ctx_len, edesc->sec4_sg, DMA_BIDIRECTIONAL); @@ -921,8 +920,7 @@ static int ahash_final_ctx(struct ahash_request *req) sec4_sg_bytes = sec4_sg_src_index * sizeof(struct sec4_sg_entry); /* allocate space for base edesc and hw desc commands, link tables */ - edesc = kzalloc(sizeof(*edesc) + DESC_JOB_IO_LEN + sec4_sg_bytes, - GFP_DMA | flags); + edesc = kzalloc(sizeof(*edesc) + sec4_sg_bytes, GFP_DMA | flags); if (!edesc) { dev_err(jrdev, "could not allocate extended descriptor\n"); return -ENOMEM; @@ -933,8 +931,7 @@ static int ahash_final_ctx(struct ahash_request *req) init_job_desc_shared(desc, ptr, sh_len, HDR_SHARE_DEFER | HDR_REVERSE); edesc->sec4_sg_bytes = sec4_sg_bytes; - edesc->sec4_sg = (void *)edesc + sizeof(struct ahash_edesc) + - DESC_JOB_IO_LEN; + edesc->sec4_sg = (void *)(edesc + 1); edesc->src_nents = 0; ret = ctx_map_to_sec4_sg(desc, jrdev, state, ctx->ctx_len, @@ -1007,8 +1004,7 @@ static int ahash_finup_ctx(struct ahash_request *req) sizeof(struct sec4_sg_entry); /* allocate space for base edesc and hw desc commands, link tables */ - edesc = kzalloc(sizeof(*edesc) + DESC_JOB_IO_LEN + sec4_sg_bytes, - GFP_DMA | flags); + edesc = kzalloc(sizeof(*edesc) + sec4_sg_bytes, GFP_DMA | flags); if (!edesc) { dev_err(jrdev, "could not allocate extended descriptor\n"); return -ENOMEM; @@ -1020,8 +1016,7 @@ static int ahash_finup_ctx(struct ahash_request *req) edesc->src_nents = src_nents; edesc->sec4_sg_bytes = sec4_sg_bytes; - edesc->sec4_sg = (void *)edesc + sizeof(struct ahash_edesc) + - DESC_JOB_IO_LEN; + edesc->sec4_sg = (void *)(edesc + 1); ret = ctx_map_to_sec4_sg(desc, jrdev, state, ctx->ctx_len, edesc->sec4_sg, DMA_TO_DEVICE); @@ -1093,14 +1088,12 @@ static int ahash_digest(struct ahash_request *req) sec4_sg_bytes = 0; /* allocate space for base edesc and hw desc commands, link tables */ - edesc = kzalloc(sizeof(*edesc) + sec4_sg_bytes + DESC_JOB_IO_LEN, - GFP_DMA | flags); + edesc = kzalloc(sizeof(*edesc) + sec4_sg_bytes, GFP_DMA | flags); if (!edesc) { dev_err(jrdev, "could not allocate extended descriptor\n"); return -ENOMEM; } - edesc->sec4_sg = (void *)edesc + sizeof(struct ahash_edesc) + - DESC_JOB_IO_LEN; + edesc->sec4_sg = (void *)(edesc + 1); edesc->sec4_sg_bytes = sec4_sg_bytes; edesc->src_nents = src_nents; @@ -1166,7 +1159,7 @@ static int ahash_final_no_ctx(struct ahash_request *req) int sh_len; /* allocate space for base edesc and hw desc commands, link tables */ - edesc = kzalloc(sizeof(*edesc) + DESC_JOB_IO_LEN, GFP_DMA | flags); + edesc = kzalloc(sizeof(*edesc), GFP_DMA | flags); if (!edesc) { dev_err(jrdev, "could not allocate extended descriptor\n"); return -ENOMEM; @@ -1244,8 +1237,8 @@ static int ahash_update_no_ctx(struct ahash_request *req) * allocate space for base edesc and hw desc commands, * link tables */ - edesc = kzalloc(sizeof(*edesc) + DESC_JOB_IO_LEN + - sec4_sg_bytes, GFP_DMA | flags); + edesc = kzalloc(sizeof(*edesc) + sec4_sg_bytes, + GFP_DMA | flags); if (!edesc) { dev_err(jrdev, "could not allocate extended descriptor\n"); @@ -1254,8 +1247,7 @@ static int ahash_update_no_ctx(struct ahash_request *req) edesc->src_nents = src_nents; edesc->sec4_sg_bytes = sec4_sg_bytes; - edesc->sec4_sg = (void *)edesc + sizeof(struct ahash_edesc) + - DESC_JOB_IO_LEN; + edesc->sec4_sg = (void *)(edesc + 1); edesc->dst_dma = 0; state->buf_dma = buf_map_to_sec4_sg(jrdev, edesc->sec4_sg, @@ -1350,8 +1342,7 @@ static int ahash_finup_no_ctx(struct ahash_request *req) sizeof(struct sec4_sg_entry); /* allocate space for base edesc and hw desc commands, link tables */ - edesc = kzalloc(sizeof(*edesc) + DESC_JOB_IO_LEN + sec4_sg_bytes, - GFP_DMA | flags); + edesc = kzalloc(sizeof(*edesc) + sec4_sg_bytes, GFP_DMA | flags); if (!edesc) { dev_err(jrdev, "could not allocate extended descriptor\n"); return -ENOMEM; @@ -1363,8 +1354,7 @@ static int ahash_finup_no_ctx(struct ahash_request *req) edesc->src_nents = src_nents; edesc->sec4_sg_bytes = sec4_sg_bytes; - edesc->sec4_sg = (void *)edesc + sizeof(struct ahash_edesc) + - DESC_JOB_IO_LEN; + edesc->sec4_sg = (void *)(edesc + 1); state->buf_dma = try_buf_map_to_sec4_sg(jrdev, edesc->sec4_sg, buf, state->buf_dma, buflen, @@ -1445,8 +1435,8 @@ static int ahash_update_first(struct ahash_request *req) * allocate space for base edesc and hw desc commands, * link tables */ - edesc = kzalloc(sizeof(*edesc) + DESC_JOB_IO_LEN + - sec4_sg_bytes, GFP_DMA | flags); + edesc = kzalloc(sizeof(*edesc) + sec4_sg_bytes, + GFP_DMA | flags); if (!edesc) { dev_err(jrdev, "could not allocate extended descriptor\n"); @@ -1455,8 +1445,7 @@ static int ahash_update_first(struct ahash_request *req) edesc->src_nents = src_nents; edesc->sec4_sg_bytes = sec4_sg_bytes; - edesc->sec4_sg = (void *)edesc + sizeof(struct ahash_edesc) + - DESC_JOB_IO_LEN; + edesc->sec4_sg = (void *)(edesc + 1); edesc->dst_dma = 0; if (src_nents > 1) { -- 2.1.0